Most sportsbook operators offer similar bonus amounts, but bettors should always keep their eyes open for the biggest possible bonuses that they can get. The most important thing about any welcome offer is the amount of money bettors stand to gain from that bonus, including the free play bonus. Here are some key factors that bettors should look at when deciding where to open a sportsbook account based on what bonuses are available. With the online betting industry being as competitive as it is, players can be picky about the bonus offers they choose to claim. There are several components that make a bonus at a sportsbook worth using.